package com.qhy.springcloud.dao;

import org.apache.ibatis.annotations.Param;

import java.math.BigDecimal;

/**
 * @author qiuhongyu
 * @date 2020/12/8 11:14
 */
public interface AccountMapper {

    int decrease(@Param("userId") Long userId, @Param("money") BigDecimal money);
}
